An issue was discovered in Insyde InsydeH2O with kernel 5.2 through 5.5. The Save State register is not checked before use. The IhisiSmm driver does not check the value of a save state register before use. Due to insufficient input validation, an attacker can corrupt SMRAM.
The product uses an externally controlled name or reference that resolves to a resource that is outside of the intended control sphere.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Insydeh2o | Insyde | 5.2 (including) | 5.5 (including) |